Allen-Bradley 1756-L1 ControlLogix Processor Module
$123.00
$320.00
Description
Allen-Bradley 1756-L1 ControlLogix Processor Module
The Allen-Bradley 1756-L1, also cataloged as the 1756-L1 Processor Module, operates as a dedicated hardware component for programmable logic execution and controller communication within ControlLogix platforms. The module provides Logix5550 processing with RS-232 communication and ControlLogix backplane data exchange.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-L1 |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.79 lbs |
| Dimensions | One slot width |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 4.1 W maximum at 60 deg C |
| Module Type | Processor Module |
| Product Line | ControlLogix |
| Processor Family | Logix5550 |
| User Memory | 64 KB |
| Discrete I/O Capacity | Up to 128,000 discrete I/O |
| Analog I/O Capacity | Up to 4,000 analog I/O |
| Communication Port | One RS-232 serial interface |
| Communication Protocols | DF1, DH-485 |
| Network Compatibility | DeviceNet, DH+, ControlNet, EtherNet/IP networks |
| Isolation Voltage | 30 V continuous |
| Backplane Current | 120 mA at 5 VDC; 2 mA at 24 VDC |
| Minimum Operating Current | 2 mA at 10 VDC |
| Maximum Operating Current | 3.5 mA at 30 VDC |
| Communication Cable | 1756-CP3 |
| Compatible Memory Modules | 1756-M1, 1756-M2, 1756-M3 |
| Battery Backup | 1756-BA1, 1756-BA2 |
| Enclosure Type | Open |
| Removable Terminal Blocks | 1756-TBCH, 1756-TBS6H |
ControlLogix Processor Execution and Network Communication
The 1756-L1 provides processor execution functions for ControlLogix PAC systems through the Logix5550 architecture. The module executes application logic, manages I/O data exchange, and communicates with other ControlLogix components through the chassis backplane.
The processor supports firmware flash compatibility within the ControlLogix platform and provides communication access through RS-232 serial connection. Network integration options include DeviceNet, DH+, ControlNet, and EtherNet/IP communication interfaces through compatible communication modules.
Backplane Bus Communication and I/O Density Scaling
The 1756-L1 uses the ControlLogix backplane bus for deterministic data transfer between the processor, I/O modules, and communication interfaces. The processor architecture supports scalable I/O configuration with up to 128,000 discrete I/O points and 4,000 analog I/O points.
Memory expansion is supported through compatible 1756-M1, 1756-M2, and 1756-M3 memory modules. Battery backup options include 1756-BA1 and 1756-BA2 components for application data retention.
Frequently Asked Questions (FAQ)
Q: What communication interface is integrated into the 1756-L1 processor module?
A: The module includes one RS-232 communication port supporting DF1 and DH-485 protocols.
Q: What type of memory is provided by the 1756-L1?
A: The processor provides 64 KB user memory and supports optional 1756-M1, 1756-M2, and 1756-M3 memory modules.
Q: What ControlLogix chassis requirements apply to the 1756-L1?
A: The module occupies one ControlLogix chassis slot and requires backplane power of 120 mA at 5 VDC and 2 mA at 24 VDC.
Field Installation Guidelines
Install the 1756-L1 processor module into a compatible ControlLogix chassis slot and verify chassis power availability before startup. Ensure the module is fully seated in the backplane connector and secured according to the chassis installation procedure.
Connect RS-232 communication wiring using the specified communication cable and verify serial communication parameters before data exchange. Route communication cables separately from high-voltage power conductors to reduce electromagnetic interference.
Install compatible battery and memory modules according to hardware configuration requirements. Verify firmware compatibility, controller configuration, and network module settings before placing the controller into operation.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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